*ERROR* Couldn't find PLL settings for mode!

Последние несколько дней в выводе dmesg (и в выводе journalctl) такая вот вакханалия (ниже). Нетбук Samsung N127, драйвер видео xf86-video-intel 2.21.0-1, адаптер
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GSE Express Integrated Graphics Controller (rev 03)
Ядро 3.7.6-1-ARCH, система 32 бит. Визуально проявляется - если это проявляется именно эта ошибка - подтормаживаниями при проигрывании видео (каждые несколько минут как бы замирает, несколько кадров глотается, далее воспроизводится нормально. Момент возникновения не уловил.

Гугель по фразе "*ERROR* Couldn't find PLL settings for mode!" выдаёт много чего, но в основном про убунту, внешние мониторы и без решения.

/etc/X11/Xorg.conf в системе отсутствует.

Куда ещё глянуть, в каком месте копнуть, как вообще бороться? Нутром чую, что дело в xf86-video-intel, но что делать - не понимаю. Помогите, плз.

[42019.706484] [drm:i9xx_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
[42019.706524] ------------[ cut here ]------------
[42019.706629] WARNING: at drivers/gpu/drm/i915/intel_display.c:6976 intel_modeset_check_state+0x4b0/0x620 [i915]()
[42019.706642] Hardware name: N128
[42019.706654] encoder's hw state doesn't match sw tracking (expected 1, found 0)
[42019.706664] Modules linked in: fuse bnep bluetooth snd_hda_codec_realtek arc4 uvcvideo snd_hda_intel videobuf2_vmalloc videobuf2_memops ath9k snd_hda_codec videobuf2_core snd_hwdep ath9k_common videodev snd_pcm ath9k_hw joydev media ath snd_page_alloc snd_timer snd mac80211 r8169 cfg80211 lpc_ich mii acpi_cpufreq soundcore rfkill mperf i2c_i801 processor battery evdev psmouse thermal ac serio_raw fan coretemp pcspkr microcode ext4 crc16 jbd2 mbcache sd_mod ata_generic pata_acpi uhci_hcd ata_piix libata ehci_hcd scsi_mod usbcore usb_common i915 video button i2c_algo_bit intel_agp intel_gtt drm_kms_helper drm agpgart i2c_core
[42019.706902] Pid: 1908, comm: kworker/0:1 Tainted: G        W    3.7.6-1-ARCH #1
[42019.706914] Call Trace:
[42019.706955]  [<c103b622>] warn_slowpath_common+0x72/0xa0
[42019.707050]  [<f83ab500>] ? intel_modeset_check_state+0x4b0/0x620 [i915]
[42019.707140]  [<f83ab500>] ? intel_modeset_check_state+0x4b0/0x620 [i915]
[42019.707168]  [<c103b6f3>] warn_slowpath_fmt+0x33/0x40
[42019.707262]  [<f83ab500>] intel_modeset_check_state+0x4b0/0x620 [i915]
[42019.707342]  [<f804f200>] ? drm_mode_destroy+0x10/0x30 [drm]
[42019.707432]  [<f83abdce>] intel_set_mode+0x6fe/0x9a0 [i915]
[42019.707473]  [<c125882b>] ? acpi_os_release_object+0xd/0x11
[42019.707578]  [<f83ae475>] intel_modeset_setup_hw_state+0x515/0x7f0 [i915]
[42019.707693]  [<f83b04aa>] intel_lid_notify+0x9a/0xc0 [i915]
[42019.707722]  [<c13fc493>] notifier_call_chain+0x43/0x60
[42019.707757]  [<c10617d1>] __blocking_notifier_call_chain+0x41/0x80
[42019.707782]  [<c106182f>] blocking_notifier_call_chain+0x1f/0x30
[42019.707824]  [<f80280c5>] acpi_lid_send_state+0x83/0xaf [button]
[42019.707866]  [<f802814c>] acpi_button_notify+0x3b/0xbb [button]
[42019.707893]  [<c125cd22>] ? acpi_ec_run+0x7b/0x80
[42019.707917]  [<c125aa6e>] acpi_device_notify+0x16/0x18
[42019.707942]  [<c12665e3>] acpi_ev_notify_dispatch+0x33/0x4a
[42019.707966]  [<c1257d6c>] acpi_os_execute_deferred+0x20/0x2b
[42019.707993]  [<c1056ba9>] process_one_work+0x119/0x400
[42019.708019]  [<c1257d4c>] ? acpi_os_wait_events_complete+0x1e/0x1e
[42019.708043]  [<c10571a1>] worker_thread+0x111/0x370
[42019.708066]  [<c13f8fec>] ? _raw_spin_unlock_irqrestore+0x2c/0x40
[42019.708092]  [<c1057090>] ? rescuer_thread+0x1d0/0x1d0
[42019.708115]  [<c105b324>] kthread+0x94/0xa0
[42019.708142]  [<c1060000>] ? __hrtimer_start_range_ns+0x4c0/0x4c0
[42019.708169]  [<c13ff737>] ret_from_kernel_thread+0x1b/0x28
[42019.708192]  [<c105b290>] ? kthread_freezable_should_stop+0x50/0x50
[42019.708212] ---[ end trace 7b48974c97142289 ]---
[42019.708236] ------------[ cut here ]------------
[42019.708318] WARNING: at drivers/gpu/drm/i915/intel_display.c:7010 intel_modeset_check_state+0x481/0x620 [i915]()
[42019.708334] Hardware name: N128
[42019.708347] crtc's computed active state doesn't match tracked active state (expected 1, found 0)
[42019.708357] Modules linked in: fuse bnep bluetooth snd_hda_codec_realtek arc4 uvcvideo snd_hda_intel videobuf2_vmalloc videobuf2_memops ath9k snd_hda_codec videobuf2_core snd_hwdep ath9k_common videodev snd_pcm ath9k_hw joydev media ath snd_page_alloc snd_timer snd mac80211 r8169 cfg80211 lpc_ich mii acpi_cpufreq soundcore rfkill mperf i2c_i801 processor battery evdev psmouse thermal ac serio_raw fan coretemp pcspkr microcode ext4 crc16 jbd2 mbcache sd_mod ata_generic pata_acpi uhci_hcd ata_piix libata ehci_hcd scsi_mod usbcore usb_common i915 video button i2c_algo_bit intel_agp intel_gtt drm_kms_helper drm agpgart i2c_core
[42019.708610] Pid: 1908, comm: kworker/0:1 Tainted: G        W    3.7.6-1-ARCH #1
[42019.708623] Call Trace:
[42019.708661]  [<c103b622>] warn_slowpath_common+0x72/0xa0
[42019.708757]  [<f83ab4d1>] ? intel_modeset_check_state+0x481/0x620 [i915]
[42019.708845]  [<f83ab4d1>] ? intel_modeset_check_state+0x481/0x620 [i915]
[42019.708872]  [<c103b6f3>] warn_slowpath_fmt+0x33/0x40
[42019.708961]  [<f83ab4d1>] intel_modeset_check_state+0x481/0x620 [i915]
[42019.709045]  [<f804f200>] ? drm_mode_destroy+0x10/0x30 [drm]
[42019.709135]  [<f83abdce>] intel_set_mode+0x6fe/0x9a0 [i915]
[42019.712649]  [<c125882b>] ? acpi_os_release_object+0xd/0x11
[42019.712763]  [<f83ae475>] intel_modeset_setup_hw_state+0x515/0x7f0 [i915]
[42019.712875]  [<f83b04aa>] intel_lid_notify+0x9a/0xc0 [i915]
[42019.712902]  [<c13fc493>] notifier_call_chain+0x43/0x60
[42019.712939]  [<c10617d1>] __blocking_notifier_call_chain+0x41/0x80
[42019.712964]  [<c106182f>] blocking_notifier_call_chain+0x1f/0x30
[42019.713005]  [<f80280c5>] acpi_lid_send_state+0x83/0xaf [button]
[42019.713045]  [<f802814c>] acpi_button_notify+0x3b/0xbb [button]
[42019.713070]  [<c125cd22>] ? acpi_ec_run+0x7b/0x80
[42019.713093]  [<c125aa6e>] acpi_device_notify+0x16/0x18
[42019.713117]  [<c12665e3>] acpi_ev_notify_dispatch+0x33/0x4a
[42019.713139]  [<c1257d6c>] acpi_os_execute_deferred+0x20/0x2b
[42019.713163]  [<c1056ba9>] process_one_work+0x119/0x400
[42019.713187]  [<c1257d4c>] ? acpi_os_wait_events_complete+0x1e/0x1e
[42019.713211]  [<c10571a1>] worker_thread+0x111/0x370
[42019.713233]  [<c13f8fec>] ? _raw_spin_unlock_irqrestore+0x2c/0x40
[42019.713257]  [<c1057090>] ? rescuer_thread+0x1d0/0x1d0
[42019.713278]  [<c105b324>] kthread+0x94/0xa0
[42019.713302]  [<c1060000>] ? __hrtimer_start_range_ns+0x4c0/0x4c0
[42019.713329]  [<c13ff737>] ret_from_kernel_thread+0x1b/0x28
[42019.713352]  [<c105b290>] ? kthread_freezable_should_stop+0x50/0x50
[42019.713370] ---[ end trace 7b48974c9714228a ]---

В /var/log/Xorg.0.log в этот момент вот что:
[ 42019.772] (II) intel(0): EDID vendor "HSD", prod id 1001
[ 42019.772] (II) intel(0): Printing DDC gathered Modelines:
[ 42019.773] (II) intel(0): Modeline "1024x600"x0.0   54.20  1024 1117 1152 1328  600 641 646 680 -hsync -vsync (40.8 kHz eP)
[ 42205.259] (II) intel(0): EDID vendor "HSD", prod id 1001
[ 42205.259] (II) intel(0): Printing DDC gathered Modelines:
[ 42205.259] (II) intel(0): Modeline "1024x600"x0.0   54.20  1024 1117 1152 1328  600 641 646 680 -hsync -vsync (40.8 kHz eP)
[ 42205.738] (II) intel(0): EDID vendor "HSD", prod id 1001
[ 42205.738] (II) intel(0): Printing DDC gathered Modelines:
[ 42205.738] (II) intel(0): Modeline "1024x600"x0.0   54.20  1024 1117 1152 1328  600 641 646 680 -hsync -vsync (40.8 kHz eP)
WBR, eugenez // Debian:cli | Manjaro:Cinnamon | Arch:KDE | Kubuntu
Да, видео intel обновлялось бодро и помногу, если откатываться - а куда именно?
[2012-07-24 08:23] upgraded xf86-video-intel (2.20.0-1 -> 2.20.1-1)
[2012-07-25 09:01] upgraded xf86-video-intel (2.20.1-1 -> 2.20.1-2)
[2012-07-26 08:01] upgraded xf86-video-intel (2.20.1-2 -> 2.20.1-3)
[2012-07-28 08:32] upgraded xf86-video-intel (2.20.1-3 -> 2.20.2-2)
[2012-08-11 08:45] upgraded xf86-video-intel (2.20.2-2 -> 2.20.3-1)
[2012-08-19 20:21] upgraded xf86-video-intel (2.20.3-1 -> 2.20.4-1)
[2012-08-28 00:09] upgraded xf86-video-intel (2.20.4-1 -> 2.20.5-1)
[2012-09-02 23:04] upgraded xf86-video-intel (2.20.5-1 -> 2.20.6-1)
[2012-09-09 21:25] upgraded xf86-video-intel (2.20.6-1 -> 2.20.7-1)
[2012-09-18 07:03] upgraded xf86-video-intel (2.20.7-1 -> 2.20.8-1)
[2012-10-03 08:49] upgraded xf86-video-intel (2.20.8-1 -> 2.20.9-1)
[2012-10-14 01:12] upgraded xf86-video-intel (2.20.9-1 -> 2.20.9-2)
[2012-10-20 18:10] upgraded xf86-video-intel (2.20.9-2 -> 2.20.10-1)
[2012-10-22 07:59] upgraded xf86-video-intel (2.20.10-1 -> 2.20.12-1)
[2012-11-17 09:56] upgraded xf86-video-intel (2.20.12-1 -> 2.20.13-1)
[2012-11-30 23:31] upgraded xf86-video-intel (2.20.13-1 -> 2.20.14-1)
[2012-12-07 06:22] upgraded xf86-video-intel (2.20.14-1 -> 2.20.15-1)
[2012-12-19 08:53] upgraded xf86-video-intel (2.20.15-1 -> 2.20.16-1)
[2012-12-30 09:48] upgraded xf86-video-intel (2.20.16-1 -> 2.20.17-1)
[2013-01-18 00:40] upgraded xf86-video-intel (2.20.17-1 -> 2.20.18-1)
[2013-01-22 01:21] upgraded xf86-video-intel (2.20.18-1 -> 2.20.19-1)
[2013-02-04 09:50] upgraded xf86-video-intel (2.20.19-1 -> 2.21.0-1)
WBR, eugenez // Debian:cli | Manjaro:Cinnamon | Arch:KDE | Kubuntu
 
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